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A metal-lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process for internal pressure

A metal lining, composite material technology, applied in the direction of metal layered products, synthetic resin layered products, lamination, etc. Complexity and other problems, to achieve the effect of large-scale production and automated production, less defects, and high bonding strength

Active Publication Date: 2022-06-07
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the above prior art, the present invention provides a metal-lined composite material lattice interlayer double-skin cylindrical shell structure and its preparation process under internal pressure, which can better solve the problems of existing composite materials. Sandwiched cylindrical shells cannot well realize the organic unity of high internal pressure strength, high stiffness and light weight, and the preparation process is complicated, and it is difficult to realize large-scale, batch and automated production, and the existing preparation process is rough and the preparation process prone to problems such as defects

Method used

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  • A metal-lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process for internal pressure
  • A metal-lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process for internal pressure
  • A metal-lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process for internal pressure

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Embodiment 1

[0045] The composite lattice sandwich double-skin cylindrical shell structure with metal inner lining under internal pressure of the present invention comprises: a thin-walled cylindrical metal lining, an inner skin, a lattice core and an outer skin, wherein the inner skin is composed of Composite materials are used for the outer skin and the inner skin; according to the strength of the thin-walled metal lined cylindrical shell under internal pressure, the inner skin is made of filament winding; the lattice core includes corrugated reinforcing ribs and isosceles trapezoidal foam strips, and corrugated reinforcing ribs It is evenly surrounded by the foam strip along the outer wall of the inner skin, and then fixed by the outer skin to meet the rigidity requirements of the inner pressure thin-walled cylindrical shell metal-lined composite cylindrical shell; the corrugated reinforcement is made of composite materials; the foam strip and the corrugated reinforcement There is no gap...

Embodiment 2

[0057] A preparation process of a composite lattice sandwich double-skin cylindrical shell structure with metal inner lining that is subjected to internal pressure in this embodiment, and the preparation process includes the following steps:

[0058] Step 1: Wind the thin-walled metal lining tube 1 with a predetermined fiber layer on the winding machine to form the inner skin 2;

[0059] Step 2: Prepare the lattice interlayer. The interlayer is mainly composed of two specifications of foam strips and fiber cloth 5 arranged alternately, and is formed by laying a circle along the inner skin 2 through the cooperation of five special tools. The specific process of interlayer preparation is as follows :

[0060] 1) Two equal quantities of isosceles trapezoidal foam strips 3 and 4 with different upper and lower bottoms are processed by the sawing machine (N is the size 1 and size 2, N is an even number and N≧16)

[0061] 2) The upper bottom of the foam strip 3 of the specification ...

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Abstract

The invention discloses a metal-lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process for bearing internal pressure, and relates to a preparation process for a large-scale, high-automated, lightweight pressure-bearing vessel and pipeline. The present invention aims to solve the problem that the existing composite cylindrical shell cannot well realize the organic unity of high strength, high stiffness and light weight, the problem that the conventional preparation process is complicated, and the problem that large-scale structures are not easy to produce in batches. The preparation process adopted in the present invention is: step 1: wrap the metal lining on the winding machine to wind the preset fiber filaments to form an inner skin; step 2: lay a lattice sandwich core containing foam strips and corrugated ribs; step 3: Winding preset fiber filaments on the outer wall of the sandwich to form an outer skin; Step 4: Put the structure in a curing furnace for curing to obtain a composite material lattice sandwich double-skin cylindrical shell structure with a metal lining. The invention is applicable to a metal-lined composite material lattice interlayer double-skin cylindrical shell structure and a preparation process thereof.

Description

technical field [0001] The invention relates to a preparation process of a large-scale and high-automation lightweight pressure-containing container or a pipeline, in particular to a preparation process of a composite lattice sandwich double-skin cylindrical shell structure with metal inner lining that withstands internal pressure. Background technique [0002] At present, the pressure vessel in the petrochemical industry is developing towards the direction of high parameterization, which requires higher and higher material strength and rigidity, and the aerospace field puts forward the requirements of high strength, high rigidity, light weight and no leakage for rocket fuel storage tanks. Based on this demand, this patent establishes an all-metal lined composite lattice sandwich double-skin cylindrical shell structure and its preparation process. Its advantages are: in terms of structure: ① metal lining, you can choose a metal with high corrosion resistance to reduce the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/14B32B17/02B32B17/06B32B17/12B32B27/02B32B27/12B32B27/34B32B3/08B32B1/08B32B37/02
CPCB32B1/08B32B3/085B32B5/02B32B5/26B32B15/14B32B37/02B32B2307/718B32B2266/0214B32B2266/0242B32B2266/0235B32B2262/101B32B2262/106B32B2262/0269B32B2597/00B32B2439/00
Inventor 顾付伟朱晓磊方岱宁陆晓峰刘杨
Owner NANJING TECH UNIV
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